Machine for operating on shoes.



' Patented Apr. 7, 1914. 14 SHEETS-SHEET 1.

E. E. WINKLEY. MACHINBFOR OPERATING ON SHOES.

APPLIoATIoiI FILED SEPT; 22 1 ,OQQfi 19.

1 7/4 fizz/la & 1.1,

E. E. WINKLBY. MAGHINE FOR OPERATING 0N SHOES.

APPLICATION FILED SEPT. 22, 1910. ,61 9. l Patented Apr. 7, 1914 14SHEETS-SHEET 2.

B1 E. WINKLEY. MACHINE FOR OPERATING 0N SHOES. AVIPLIUATION FILED SEPT.22, i910.

Patented Apr. 7, 1914 14 SHEETS-SHEET 3.

'IYIACHINE FOR OPERATING ON SHOES.

E. El WINKLEY.

APPLICATION FILED SEPT. 22, 1910.

Patented Apr. 7, 1914.

14 SHEETS-SHEET 4i.

E. E. WINKLEY.-' MACHINE FQR OPERATING ON SHOES.

' ATPLIOATION FILED SEPT. 22, 1910. r I

Patented Apr. 7, 1914 14 SHEETS-SHEET 5.

E. E. WINKLEY. MACHINE FOR OPERATING ON SHOES.

- I v APPLIOATIO'NIILED SEPT.22,1910.

1,092,619. :Patenwq Apr.7,1914

' 14 sums-sum e,

E. B. WINKLEY. MACHINE FOB OPERATING 0N SHOES.

I APIPLIOIATION FILED 811151222, 1910; I rammed 7, 1914 14 SHFETB-SEEBT7.

B; E. WINKLEY. MACHINE FOR OPERATING 0N SHOES.

. APPLICATION FILED SEPT. 22, 1910.

1,092,619. Pa n Apr. 7, 19m

. 14 SHEETS-SHEET a.

Eh E WLNKLEY.

MACHINE FOR OPERATING 0N SHOES.'

APPLICATION FILED SEPT. 22, 1910 Patented Apr. 7, 191% 14 SHEETS-SHEET9.

on on no as on an e "E. E. WINKLEY. MACHINE FOR OPERATING ON SHOES.

. APPLICATION FILED SEPT. 22, 1910. 1,09%619; Patented Apr. 7, 914

- 14 SHBETSr-SHEBI 1o;

E. E. WINKLEY. MACHINE FOR OPERATING 0N SHOES.

- APPLICATION TILED SEPT. 2'2, 1910. 1 92,619. Patented Apr. 7, 1914.

'14 SHEETS-SHEBT 11.

E. E. WINKLEY. MACHINE FOR OPERATING ON SHOES.

- APPLICATION FILED 573F122, 1910. I v h I 1,092,61 9. I A Patented Apr.7,.191 1 14 SHEETS-SHEET 12.

y a l wax .E. B. WINKLEY. MACHINE FOR OPERATING 0N SHOES.

APPLICATION IILED SEPT. 22, 1910.

' Patented Apr. 7, 191i I4 SHEETS-SHEET 13.

E. E. WINKLBY. MACHINE FOR OPERATING ON snons.

' I APPLICATION FILED SEPT. 22, 1910- 1 92,619; I Patented Apr. 7, 1914.

14 sums-snafu.

is r srarns "earns onion.

ERAST'US WINKLEY, OF LYNN, MASSACHUSETTS.

MACHINE FOR OPERATING ON SHOES.

To all whom it may concern Be it knownthat I, ERASTUS E. VVINKLEY, acitizen ofthe United States, residing at Lynn, in the county of Essexand State of Massa'clmsetts, have invented certain new and usefulImprovements in Machines for Operating on Shoes; and I do herebydeclarethe following to be a full, clear, and exact description of theinvention, suchas will enable others skilled in the art to which itappertains to make and use the same.

The invention relates to automatic shoe machines, and more particularlyto machines for use in channeling, or roundingnnd channeling the sole ofthe shoe after the outer sole has been temporarily secured in positionpreparatory to permanently sewing or otherwise securing it to the shoe,although various features of the invention may be en'ibodied in machinesforpcrforining other operations upon partially completed shoes.

The primary object of the invention is to provide a machine by "whichshoes may be automatically channeled or rounded and channeled withoutrequiring the attention of the. operator except to insert and remove theshoes from the machine.

A further objectof the invention is to pro- Vide novel and improvedmechanism for controlling the swinging movements given to the shoes,which is particularly applicable to those machines in which the distanceof the point of operation from the inseam or last is varied bytransverse movement of the guide against which the shoe is held.

'To these ends, the invention consists in the features and comhinationshereinafter described and set forth in the claims.

. The various features of the invention will. be understood from aninspection. of the accompanying drawings and the following detaileddescription of the machine illustrated therein.

. a In the drawings, Figure 1 is an elevation of the lefthand side of amachine embodying the inventionin its preferred form. Fig. 2 is asectional detail. showing the cams for operating the guide and thechannel knife. Fig. 3 is an elevation of the right hand side of themachine. Fig. 4 is a detailed elevation of parts to be described. Fig. 5is an elevation of the lefthand side of the channeling androundingmechanism. Fig. 6 is a detailed elevation of the guide and the feelerfinger for controlling the swinging Specification of Letters Patent.

ing and Fig. 11. Fig. 14- is a front Patented Apr. '7, 1914.

Application filed September 22, 1910. Serial No. 583,286.

movements of the shoe. Fig. 7is a front elevation of the parts shown inFig. 6. Fig. 8 is an elevation of the right hand side of the channelingand rounding mechanism. Fi 9 IS a detail of the guide and feeler finger.Fig. 10 is a plan view of the guide and feeler finger. Fig, 11-is anelevation partly in section showing the supports for the channelroundingmechanism and connections for operating thev same. Fig. 12 is asectional detail showing a part of the connection between the feelerfinger and the mechanism controlled therehyh Fig. 13 is a horizontalsectional view on line 1313,

elevation of the channeling and rounding mechanism. Fig. 15 is asectional view on a larger scale taken on line 15,-15, Fig. 1. Fig. 16is a detailed plan view of the devices for holding the shoe against theguide. Fig. 17 is a side elevation of the devicesshown in Fig. 16, andFig. 18 shows a side elevation and plan of the bar for drawing the shoeagainst the guide. Fig. 19 is a plan view of the jack swingingmechanismon a larger scale than in Fig. 3; Fig. 20 is a sectional detailview of the auxiliary feeding gripper; Fig. 21 is a detail plan view ofthe auxiliary feeding gripperand pivot gripper; Fig. 22 is a sectionalview on line Fig. 21.; Fig. 23 is a. view similar to Fig: 21 with theshaft 95 and parts carried thereby removed; Fig. 24: is a detailelevation showing parts of the jack swinging mechanism; Fig. 25 is avertical sectional view through the jack swinging clutch Fig, 26 is ahorizontal sectional view on line 26, Fig. 25; Fig. 27 is a detail rearelevation of the driving mechanism for the correcting cam shaft; Fig. 28is a detail side elevation showing the device for coir trolling theoperation of the correcting can] shaft; Fig. 29 is a sectional view online 29, Fig. 27; Fig. 30 is a detail side elevation showing pa'rts ofthe mechanism for con trolling theopcration of the correcting can)shaft; Fig. 31 is a. sectional plan view of the devices shown in Fig.30'; Fig. 32 a detail elevation showing the devices for varying theoperation of the tripping devices for different sizes of shoes; and Fig. 33 is a detail view of a part of the tripping devices.

In the machine illustrated in the drawings, the means for operating onthe shoe consists of sole rounding and channeling mechanism which inmany respects is similar to the rounding and channeling mechanism shownand described 'in the patent to French and Myer No. 599,602, datedFebruary 22, 1898. This mechanism comprises a trimming knife 1 achanneling knife 2, a sole support 3, and a four motion feed plate '4,all of which have the same construction as e corresponding parts in themachine of the above patent, and are operated in a similar manner fromthe cam shaft 5, Figs. 5 and 8. The guide or.work support 6 is similarto the shank guide of the patent, and is adapted to enter the creasebetween the upper and sole, The guide acts to uide the'shoe about thefore part as wel as through the shank, and is automatically moved tovary the distance of the trimming knife from the inseam or last bymechanism to be described. The slide 7 which carries the channel knifeand sole support is moved .to vary the position of the channel knifewith relation to the trimmin knife by a pinion 8 secured to a rock sha t9, as in the patent referred to. The shaft 9 carries an arm 10 whichisconnected with a lever 11 by a spring 12, and is engaged by a shoe 13pivoted to an arm 14 on the lever. The arm 1 1 is adjustably secured onthe lever 11 so that its position may be varied to vary the .movementwhich is imparted to the channeling knife when the lever is rocked. The

' arm is clamped in adjusted position by means of the screw 16, to whichone end of the spring is secured. The lever 11 is automatically operatedat proper intervals to vary the positionofthechannel by mecha- 7 nismwhich willbe hereinafter described.

In general, the mode of operation of the devices thus far described, infeeding a shoe held against the guide 6 and in trimming andchanneling'the sole, is the same as the mode of operation of thecorresponding devices in the machine of the French and Myer patent, towhich reference may be had for a detailed description of their mode ofoperation. a

The shoes to be operated upon are supported upon a jack which isautomatically swung to properly guide the shoe during the channeling androunding operation, and the devices operating upon the shoe aremaintained in proper relation to the sole in 'operating along differentparts of the shoe by tilting the siipporton which they .are

.mgunted, either longitudinally or trans movements transversely of .thefeed take place aboutv this point. The head 19 is mounted and rocked inbearings 20 and 21 formed in the frame of the machine, and the Thecollar 25 is provided with an annular groove which is engaged bypins'mounted in the arms of a yoke formed on one end of a. bell cranklever 26. The bell crank lever is mounted on the frame of the machineand 28 which projects from a sleeve mounted on the frame of the machine.The sleeve is provided with a second arn129 which carries a rollengaging a cam .30 secured to the cam shaft 31. The head 19 is rocked tovary the inclination of the channeling and rounding mechanismlongitudinally of the feed through a link 32, the upper end of whichispivotcd to 0. lug on the side of the head 19, and the lower end ofwhich is' connected to an arm 33 projecting from a sleeve which ismounted on the frame of the machine. The sleeve carries a second arm34:, the end of which is provided-with a roll engaging axis of thesehearings is arranged to pass slide on the hollow shaft of the head 19.

is connected through a link 27 with an arm a cam 35, which is alsosecured to'the cam on the shaft 39, which is mounted in bearings in theouter end of a second arm 40. The rear end of the arm 40 is mounted toturn freely on a shaft 41, which is mounted in fixed bearingsin theframe of the machine. This construction permits the jack to be movedfreely in any horizontal direction in transferring the point ofoperation of thechanneling and rounding mechanism around the shoe. Thejack is forced yieldingly upward to press the sole of the shoe againstthe sole support/3 during the roundchannel-ing mechanism, so that thetilting the shoe to be end of the arm 38 is mounted to turn freely" ingand channeling by a spring 4&2 connected to .onepnd of-a bell cr nklever 43, "the otl 1er.e .nd of which engages a collar 44 18.0

upon the jack carrying sleeve 36'. Lough tudinal or feeding movementsare imparted to the jack by the feed plate and sole supportof thechanneling and rounding mechanism and by an auxiliary feeding mechanismwhich will be referred to later.

Swinging movements are imparted to the shoe during the channeling androunding so that the edge of the shoe is maintained substantiallyparallel. with the direction of feed. In order that the shoe may beaccurately swung. to secure the proper guiding of the shoe during theoperation of the machine, the-mechanism for swinging the shoe is socontrolled by the contour engaged by the guide that the shoe is swung inaccordance with its longitudinal curvature at the point where it isengaged by the guide, this point corresponding to the point of operationof the channeling and rounding mechanism. The devices for thus swingingthe shoe comprise a feeler 45 arranged to engage the crease or othercontour of the shoe which is engaged by the guide, in advance ofthepoint of engagement of the guide and connected to control the mechanismwhich imparts turning movements to the jack supporting shaft 37, Figs.5, 10 and 14. The feeler is preferably arranged about the distance ofo11e'feeding movement'of the shoe inadvance of the point of operation ofthe channeling and rounding knives, and is mounted on or connected withthe guide so that it may move with the guide when the guide is shiftedtransversely of the feed and may move with relation to the guide incontrolling the swinging movements of the shoe. The feeler is in theform of a finger projecting from. a slide 48 which is mounted to movefreely in a guide way -17 formed in the side of the guide 6. The rearend of the feeler slide 46 is connected with one end of a bell cranklever 4-8, which is pivoted on the guide carrying arm 6 so that thelever and feeler will move transversely of the feed with the guide. Thefeeler is pressed yieldingly toward the shoe by a spring 49. The bellcrank lever 48 is connected by a link 50 with one arm of a bell cranklever 51, which is pivoted on the support 17. The bell crank lever 51 isconnected by a link 52 with a block 53 which is mounted to slide withina hollow stud 54: secured in the bore of the hollow shaft 55, forming apart of the head 19, Figs. 11 and 12. The block 53 is connected by a rod56 with a crank arm 57 carried by av pulley 58,

which is mounted beyond the rear end of the shaft 55, Fig. 1. -The rod56 has a swivel connection with the block 53, so that the connectionsbetween the feeler finger and pulley 58 do not interfere with therocking movements of the head 19. The pulley 58 is connected to turn inunison with a second pulley 59'through a Wire belt 60' which passesabout the pulleys and may be tightened to take up all slack and lostmotion by a turn buckle ('51, Fig. The pulley 59 is provided with aradially projecting arm 62 which is connected by a link 63 with one endof a slide bar 6-1, the other end of which is connected by a link 65with one arm of a bell crank lever (36. The other end of the bell cranklever carries'a roll engaging a cam (36 secured to a cam shaft (57 andacting to intermittently withdraw the feeler finger from engagement withthe shoe so that it will not offer any resistance to the swingingmovement imparted to the shoe. The bell crank lever (36 carries a. roll68, the position of which is controlled by the feeler finger 4-5 throughthe connections between the feeler and roll, carrying lever. Theposition of the roll 68 when the feeler is in engagement with the shoewill depend upon the-position of the point of engagement of the feelerwith relation to the point of enga ement of the guide. The position ofthe roll will therefore vary in accordance with the curvature of thecontour along which the guide and. feelcr act adjacent to the point ofoperation of the channeling and rounding knives, and will indicate theextent and direction of the turning movement which should be imparted tothe shoe to bring the point engaged by the feeler into the line of feedwhen it reaches the guide.

The mechanism through which the roll determines the rotary movementimparted to the jack turning shaft 37 during each cycle of operations ofthe rounding and channeling mechanism comprises a reciprocatingcontroller plate 69, provided at its upper end with two oppositelyinclined surfaces 70 adapted to pass on opposite sides of the roll 68when the roll is in mid orneutral position. The plate 69 is mounted onone end of a reciprocating carrier lever 71, the other end of whichcarries a roll engaging a disk cam 71 secured'to the cam shaft (37. Thecam shaft (37 makes one revolution for each revolution of the cam shaftof the channeling and rounding mechanism so that the controller plate(59 is advanced and retracted during each cycle of operations of thechanneling and rounding mechanism. lhe lower end of the cmitroller plateis connected through a link 72 to an arm 73 projecting from a sleeve 73which is loosely mounted on a shaft 74. A second arm 75 projects fromthe sleeve and connected by a link 7 6 with an arm or link 77. The rearend of the link 77 is pivoted to a pivot block 77 mounted to slide in asegmental slot formed in an actuator lever 78 and extending on oppositesides of the pivotal axis of the lever. The actuator lever is pivot--ally supported in a bearing 7 S and is oscillated by a cam 7 9 on thecam shaft 67 with which it is held in engagement by a. spring on the hubof the member 83 of a clutch through which turning movements areimparted to the jack turning shaft 37. The

jack turning clutch is a 'double acting I'lorton clutch, the drivenmember of which consists of a disk 85 secured to a hollow shaft 85. Thisshaft carries a sn'ocket wheel 86' which is connected by a chain 86 witha similar sprocket wheel secured to a gear 87. The gear 87, engages agear 87 mounted on the shaft 41. Turning movements are-transmitted tothe shaft 39 and the jack turning shaft 37 through sprocket chains 88which pass about sprocket wheels secured to the shafts 41, 39 and 37.The

rolls 830 of the jack turning clutch are forced in a direction to wedgebetween the flange 831 of the driving member 83 and the clutch surfaces832 on the driven member 85 by spring pressed pins 833, and are forcedback to render the clutch inactive by bell crank levers 834. The bellcrank levers are forced in a'direetion to release the clutch balls by aspring 835, and are actuated to render the clutch inactive through a rod836 extending through the hollow shaft. and engaging the ends of thelever. The rodis actuated at proper intervals by a cam 84 'securetl tothe cam shaft 67, and engaging 'one end of a lever 84, the other end ofwhich engages the upper end of a rod 836.

So long as the point on the shoe engaged by the feeler is in the line offeed, the roll 68 will be positioned in mid or neutral po sition whenthe feeler engages the shoe.

When the roll is in this position, the inclined surfaces 70 on thecontroller plate (39 willpass on opposite sides of the roll with- 4 thefeeler is in the line of feed.

out elfecting any swinging movement of the plate. The connectionsbetween the plate 09 and the pivot block carried by actuator lever 78are such that under these conditions, the pivotal connection between theblock and the link .77 will be in line with the axis of the actuatorlever. No turning movement will therefore be imparted to thejackswinging clutch so long as the point engaged by \Vhen this point isout. of line of feed, the' roll 68 will be positioned either to theright or left of the neutral position, a. distance proportional to theposition of this point with relation to the line of feed. Now when thecontroller plate israised, one of the surfaces 70 will ride against theroll and swing the plate about its pivot. This movement of the platewill, through the connections described, shift the pivot block to oneside or the other of the axis of theactuating lever 78 so that duringthe active stroke of the lever the driving member 83 of the jackswinging clutch will operate to swingthe jack and shoe through thedistance requisite for bringing the point on the shoe engaged by thefeeler into the line of feed.

As soon as the roll 68 has been positioned by the feeler, it is lockedand held during the advance movement of the controller may be againpositioned by the feeler. The

pivot block 77 is thus locked by a clamp 90 arranged to engage a segment91 secured to the sleeve which carries the arms 73 and 75. The clamp isoperated at proper intervals by a disk cam 90' on the cam shaft 67. Thecontroller plate and pivot blockare re-. turned to neutral positionafter eaclrcycle of operations by a cam plate 91 provided with aV-shaped mouth arranged to engage a rollon the controller plate. Aspring 92 is connected with the link 72 and tends to retract'thecontroller plate.

In order to assistthe feeding devices of the channeling and roundingmechanism in feeding the shoe, or to relieve them of the strain incidentto overcoming the inertia and 'the friction of the jack supportingdevices,

asupplemental feeding mechanism is provided for m'ipartmg feedingmovements to the ack 1n umson with the feeding movements of thechanneling and'rounding' mechanism. As shown, the supplemental feedingdevices consist of the feeding gripper 93 arranged to act on a plate 94secured to the jack turning shaft 37. The feeding gripper comprises anarm 930 pivotally mounted in a bracket 931 and provided at its forwardend with a freely turning stud 932 for engaging the under side of the.plate 94-. The movable jaw 933 of the gripper is pivoted on the plate930, and is provided with apivoted gripping studi934 at its 'forwardend. Theljaw 933 is -actuated to internnttently grip the plate 94 by acam 935 arranged to engage the end of a lever 936 which is pivoted onthe jaw 933 and imparts a clamping pressure to the 'jaw through thespring 937. The gripper is actuated to impart feeding movements to theplate 94 and connected jack through an arm 938 which pro ects from thehub of the-arm 930 and is connected by a link 939 with one arm of a,

bellcrank lever 940. The other arm of the bell crank lever carries aroll which is held in engagement with a cam 941 on the shaft 95 by aspring-942. The link-939 is-adjust ably connected to the arm. of thebell crank lever 940, so that the feeding movement of the gripper may beadjusted to correspond to the feeding movement imparted to the shoe bythe rounding and channeling mechanism. A gripper 96 is also provided forconstraining the jack to swing about the point of operation of thechanneling and rounding mechanism. This gripper is similar inconstruction to the feeding gripper, except that it does not have'anymovement in the direction of the feed. The axes of the clamping studs ofthis gripper are arranged in line with the point of operation of therounding and channeling mechanism, so that when the clamp engages theplate 91 it will forma pivot about which the jack will swing when theack turning shaft is rotated, and will constrain the jack to swing aboutthe point of operation and will relieve the strain to which theoperating mechanism would otherwise be subjected. The movable aw of thegripper 96 is opened and closed at proper intervals by a cam 960 securedto the shaft 95. y

In order that the operatorv may disengage both the feeding and pivotgrippers from the plate 94:, in case either of them are gripping theplate when it is desired to swing the jack out of position, the movablejaws of the grippers are extended rearw-ardly into position to beengaged bya cam 961 formed on the upper end of the stud 962,

and provided with an operating handle through which it may be turned tocompress the rear ends of the movable gripper jaws and thus disengagethe front ends of the jaws from the plate 9-1.

In channeling or rounding shoes provided with Scotch or Baltimore edges,the guide 6 is moved transversely of the feed to vary its. position withrelation to the rounding sleeve 101.

knife and thus vary the width of the projecting edge of the sole. Theposition of the guide is automatically controlled to give the desiredoutline to the sole by a cam 97 secured to the cam shaft 31, Figs. 1 and2. This cam is engaged by a lever 98, which is connected through a link99 with the horizontal arm of a bell crank'lever 100, Figs. 11 and 13.The vertical arlnof the leveris provided with a yoke, the arms of whichcarry rolls engaging an annular groove in a The sleeve is mounted on thestud 5 1, which is secured in the head-19 and is connected with theguide carrying arm 6 by a link 10?, Fig. 8.

The position of the channeling knife 2 with-relation to the roundingknife is automatically controlled to determine the distance of thechannel from the edge ofthe sole about differentparts of the shoe by acam 103 secured to the cam shaft 31, Figs. 1

and 2. This cam is engaged by 'a lever 104.

which is connected by a link 105 with one arm of a bell crank lever 106,Figs. 11 and 13. The other arm of the bell 'cranklever is provided witha yoke, the arms of which carry rolls engaging an annular groove in asleeve 107 which is mountedon the stud 54. The sleeve is connectedthrough a link 108 with the lever 11, which is connected with aboutthe'shoe, and which, when thrown into operatiomanakes a singlerevolution and then is automatically thrown out. One member of theclutch, which is indicated at 160 (Fig. 27) is constantly driven throughthe main driving clutch 161, and the other member of the clutch issecured to a shaft 162 upon the end ofwhich is secured a gear 163connected by change gearing 164: with a shaft 165 which carries a wormengaging a worm wheel 166 secured to the shaft 31. The intermittentlyoperating clutch 160 is a form of Horton clutch, the roll carrying ringor sleeve of which is indicated at 167. The throwing into andoutof'op'eration of the clutch is controlled by an arm 168 of a stop lever169, which is normally held in position to engage a shoulder on the rollcarrying ring by a spring 170. The stop arm 168 of the stop lever isprovided with a cushioning spring 171 which is engaged by the shoulderon the roll carrying ring, and serves to cushion the blow when theclutch is thrown out of operation. A brake 172 for stopping the shaft16:2 when the clutch is thrown out of operation is also provided, andthis brake mechanism is operated by a brake lever 173. When the brakeand stop levers are operated, the clutch 160 is thrown into operation,and after the shaft 162 has made a single revolution, the clutch isthrown out and the brake position during the rotation ofthe shaft,

and the brake lever being released as the shaft completes itsrevolution. During therevolution of the shaft the brake mechanism isheld out of action by a cam 174 arranged to engage a roll on the brakelever.

The mechanism'for operating the brake and clutch levers to throw thecorrecting mechanism into operation comprises a lever 17 5, the lowerend of which is arranged to engage the upper ends of the brake andclutch levers, and the upper end of which is pivotally connected to asliding rod 176.

The rod is acted upon by a spring 177 which tends to force the rod in adirectionto operate the clutch and brake levers to throw the correctingmechanism into operation. The rod is held in normal position against thetension of the spring by alatching toggle 178 arranged to hold the lever175 in retracted position when the links of the toggle are straightenedas indicated in Fig. 28. ()no link of the toggle. carries a roll arranged to be engaged by a resetting cam 179 during the rotation of theshaft 162. The toggle is broken to lhrow'the correcting mechanism intooperation by means of a rod 180.jthe lower end of which is arranged tostrike the toggle. This rod is forced in a direction to break the toggleby a spring 181. The rod is held in retracted position against thetension of the spring by a latch bar provided with a pin 135 which isarranged to engage one arm 182 ofa' bell crank lover, the other arm ofwhich is connected to the upper. end of the rod 180 (Figs. 30 and 81)..The pin 135 is held in projected position by a spring, for a purposewhich will be hereinafter described. The latching bar 135 is, forced ina direction to disengage the pin from the arm 182, and thus releasethetoggle actuating rod 180, by a spring 136. The bar is held in latchingposition against the tension of the spring by a pivoted latching dog 137arranged to engage a shoulder on the bar. The latching dog isheld-yieldingly in position to engage the shoulder by a spring pressedpin 138. The means for operating the latching dog to release the latchbar, and thus throw. the driving mechanism for the cam shaft 31 intooperation, comprises a vertical sliding plunger 139 which is normallysupported by a light spring 140, and is provided at its upper end with apin 141 which is supported upon a comparatively heavy spring 142 withinthe plunger. The upper end of the pin 141 is engaged by an arm of thebell crank lever 143 (Fig. 1), the other arm of which is held inengagement with a ram 144 by a spring 145. The cam 144 is secured to ashaft 146, which makes one revolution for each rcvolution'of the camshaft of the channeling and rounding mechanism, and the cam is timed tothrow the actuating mechanism for the cam shaft 31 into operation at thedesired point in the cycle of operations of the channeling and roundingmechanism. The.diSengage-- ment of the dog 137 from the latch bar by thecam 144 at each revolution of the cam shaft, is normally prevented by acontrolling slide 147 arranged to normally lie between the plunger 189and the latching dog. and having its oute end supported upon a fixedsupport 148 (Fig. 15). If the end of the controller slide is supportedon the support 148 when the cam 141 actuatcs the lever 148,-

the spring 142 will yield to allow the pin 141 to be depressed as thelever is rocked. If

controller slide 147 comprises a bar 111.

(Figs. 16 and 17) the rear end of which is pivotally supported ufpon apivoted arm 183 (Fig. -31) and the arranged to engage the end of thecontroller plate 110, the end of the bar being held in. engagement withthe plate by, a spring 184 acting upon the arm 183. A slide 185 (Fig.

83) is mounted in the front end of the bar ront end of which is 111, andcarries a latch lever186, the front end of which is arranged in the pathof the trip pins 109. The latch lever is mounted upon a pivot 187, andis held in normal position against the stop 188 by a spring pressed pin189. The latch lever is connected to operate a detent 190, which is alsopivotcd on the pivot 187, and the rear end of:

.which is arranged to engage a lug 191 on the bar 111. The detent isforced yieldingly into normal position by a spring 192. The

rear end of the slide 185 is connected by a link 193 with one arm ofa'bellcrank lever 194 (Fig. 31) which is mounted upon the bar 111 andthe otherjend of which is connected by a link 195 with one arm 196 of a3-arm lever. A second arm 197 of the 3- arm lever is connected by a'link 198 with one arm of a bell crank lever 199, the other arm of whichis'arranged to engage and operate the bell crank lever 154 to which thecontroller plate 147 is ivoted (Fig. 15). The third arm 200 of. t e S-arm lever is acted upon by a spring 201 which tends to swing the leverin a direction to retract the slide 185 at the end of the bar 111, andalso to withdraw the controllerplate 147 from engagement wlth itssupport 148. The parts are held 1n normal position against the tensionof the spring 201 by the engagement of the detent 190 on the plate 185with the lug 191 on the bar 111. When one of the trip pins strikes thelatch lever 186'during the feed of the jack and shoe, the detent 190 isdisengaged from the lug191, so that the spring 201 operates to withdrawthe controlling plate 147 from engagement with its support 148, and alsoacts to retract the slide 185. When this occurs, the plunger 139 isoperated at the proper time during the cycle of operations performed bythe rounding and channeling mechanism to

